In situ FBG inscription during fiber laser operation

被引：5
|
作者：
Leich, Martin [1 ]
Fiebrandt, Julia [1 ]
Jetschke, Sylvia [1 ]
Rothhardt, Manfred [1 ]
Jaeger, Matthias [1 ]
机构：
[1] Inst Photon Technol, D-07745 Jena, Germany
来源：
OPTICS LETTERS | 2013年 / 38卷 / 05期
关键词：
BRAGG GRATINGS; INDEX CHANGE; WRITTEN; GERMANOSILICATE;
D O I：
10.1364/OL.38.000676
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate the inscription of a 266 nm UV femtosecond pulse-induced fiber Bragg grating (FBG) in an Yb-doped fiber during optical pumping at 976 nm and the initiation of lasing with increasing grating reflectivity. Output spectra show the emission of the pumped fiber changing from the broad-ranged amplified spontaneous emission in the nonlasing case to the narrow-range laser operation due to the enhancement of FBG reflectivity during inscription. The proposed technique enables the direct characterization and control of FBG performance in fiber lasers. After FBG fabrication, we investigate the spectral characteristics of the fiber laser for different laser powers and study the influence of a thermal treatment of the FBG. (c) 2013 Optical Society of America
引用
收藏
页码：676 / 678
页数：3
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